18c2ecf20Sopenharmony_ci* ST-Microelectronics FingerTip touchscreen controller 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ciThe ST-Microelectronics FingerTip device provides a basic touchscreen 48c2ecf20Sopenharmony_cifunctionality. Along with it the user can enable the touchkey which can work as 58c2ecf20Sopenharmony_cia basic HOME and BACK key for phones. 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ciThe driver supports also hovering as an absolute single touch event with x, y, z 88c2ecf20Sopenharmony_cicoordinates. 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ciRequired properties: 118c2ecf20Sopenharmony_ci- compatible : must be "st,stmfts" 128c2ecf20Sopenharmony_ci- reg : I2C slave address, (e.g. 0x49) 138c2ecf20Sopenharmony_ci- interrupts : interrupt specification 148c2ecf20Sopenharmony_ci- avdd-supply : analogic power supply 158c2ecf20Sopenharmony_ci- vdd-supply : power supply 168c2ecf20Sopenharmony_ci- touchscreen-size-x : see touchscreen.txt 178c2ecf20Sopenharmony_ci- touchscreen-size-y : see touchscreen.txt 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_ciOptional properties: 208c2ecf20Sopenharmony_ci- touch-key-connected : specifies whether the touchkey feature is connected 218c2ecf20Sopenharmony_ci- ledvdd-supply : power supply to the touch key leds 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ciExample: 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_cii2c@00000000 { 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_ci /* ... */ 288c2ecf20Sopenharmony_ci 298c2ecf20Sopenharmony_ci touchscreen@49 { 308c2ecf20Sopenharmony_ci compatible = "st,stmfts"; 318c2ecf20Sopenharmony_ci reg = <0x49>; 328c2ecf20Sopenharmony_ci interrupt-parent = <&gpa1>; 338c2ecf20Sopenharmony_ci interrupts = <1 IRQ_TYPE_NONE>; 348c2ecf20Sopenharmony_ci touchscreen-size-x = <1599>; 358c2ecf20Sopenharmony_ci touchscreen-size-y = <2559>; 368c2ecf20Sopenharmony_ci touch-key-connected; 378c2ecf20Sopenharmony_ci avdd-supply = <&ldo30_reg>; 388c2ecf20Sopenharmony_ci vdd-supply = <&ldo31_reg>; 398c2ecf20Sopenharmony_ci ledvdd-supply = <&ldo33_reg>; 408c2ecf20Sopenharmony_ci }; 418c2ecf20Sopenharmony_ci}; 42